baber/WOPTO huggingface dataset:
Patent DD-287354-A5 (DD)
Title: Fluessigmetallionenquelle
Inventor: MACHALETT FRANK
IPC: H01J27/22
Filed: 1989-08-21
Abstract: Die Erfindung betrifft eine Fluessigmetallionenquelle, die vorzugsweise in Ionenmikrostrahlanlagen eingesetzt werden kann. Die Anwendung kann z. B. bei der maskenlosen Ionenimplantation erfolgen. Aufgabe der Erfindung ist die Verbesserung der Emissionseigenschaften von Fluessigmetallionenquellen, die vorwiegend Sb-Ionen emittieren. Die Aufgabe wird dadurch geloest, dasz die Ionenquelle in einem an sich bekannten, den Emitter umgebenden Reservoir als Quellenmaterial eine der beiden Legierungen, Au-Si-Sb mit hoechstens 35 Atom-% Si, Au-Ge-Si mit hoechstens 40 Atom-% Ge oder eine Kombination beider Legierungen mit hoechstens 30 Atom-% Si oder Ce enthaelt.{Fluessigmetallionenquelle; Sb-Ionen, vorwiegend; Legierungen; Au-Si-Sb - Au-Ge-Sb-Legierungen, kombiniert}
Patent DD-295979-A5 (DD)
Title: Isoliermittel zur herstellung von zahnprothesen mit weichplastkontaktschicht und bestaendiger haftvermittlung zum prothesenmaterial
Inventor: SCHMEIL FRIEDBERT
IPC: A61C13/01
Filed: 1989-08-22
Abstract: Die Erfindung betrifft ein Isoliermittel zur Herstellung von Zahnprothesen mit Weichplastkontaktschicht und bestaendiger Haftvermittlung zum Prothesenbasismaterial. Ziel der Erfindung ist der Einsatz eines wasser- und wasserdampfundurchlaessigen Isoliermittels zur Herstellung von Zahnprothesen mit einer Weichplastkontaktschicht aus Ethylen-Vinylacetat-Compound und bestaendiger Haftvermittlung zum Prothesenbasismaterial. Die Isolierung solcher Zahnprothesen waehrend des Heiszpolymerisationsverfahrens erfolgt erfindungsgemaesz dadurch, wobei als Isoliermittel Folien eingesetzt werden, die vorzugsweise aus Polyethylen, Polypropylen und aus PVC, gegebenenfalls mit Weichmacherzusaetzen versehen, zur Anwendung kommen.{Isoliermittel; Zahnprothesen; Weichplastkontaktschicht; bestaendige Haftvermittlung; Ethylen-Vinylacetat-Compound}
Patent DD-287279-A5 (DD)
Title: Verfahren zur elektrolytischen kupferraffination in kieselfluorwasserstoffsauren elektrolyten
Inventor: HEIN KLAUS
IPC: C25C1/12
Filed: 1989-08-30
Abstract: Die Erfindung betrifft ein Verfahren zur elektrolytischen Kupferraffination in kieselfluorwasserstoffsauren Elektrolyten und ist fuer die Raffinationselektrolyse bei Einsatz von Kupferanoden mit relativ hohen Verunreinigungsgehalten anwendbar. Erfindungsgemaesz wird ein qualitativ minderwertiges Anodenkupfer, mit Gehalten an Cu von 70 bis 98%, Ni bis 10%, Fe bis 6%, Sn bis 5%, Pb bis 4%, Zn bis 3%, S bis 1%, Ag bis 0,1% und As bis 1% in einem Ausgangselektrolyten mit 60 bis 100 g Cu/dm3, vorzugsweise 90 g/dm3, und 100 bis 150 g H2SiF6/dm3, vorzugsweise 120 g/dm3, mit einer Stromdichte bis 350, vorzugsweise 300, A/m2 belastet. Die Elektrolyttemperatur betraegt 25 bis 40C, vorzugsweise 38C. Die Verunreinigungen im Elektrolyten werden unter Rueckgewinnung von Kieselfluorwasserstoffsaeure, zweckmaeszigerweise durch eine Gewinnungselektrolyse, kontinuierlich entfernt, wobei der Kupfergehalt im Elektrolyten waehrend des Elektrolysebetriebes nicht unter den minimalen Ausgangsgehalt absinken darf. Durch die Verwendung von kieselfluorwasserstoffsaurem Kupfersilicofluoridelektrolyt kann der Raffinationseffekt der Elektrolyse erhoeht und der Raffinationsaufwand im Anodenbetrieb wesentlich verringert werden.{Kupferraffination, elektrolytisch; Metallraffination; Anodenkupfer; Elektrolyt; Kieselfluorwasserstoffsaeure; Gewinnungselektrolyse; Anodenbetrieb; Rueckgewinnung; Elektrolysebetrieb}
Patent DD-288856-A5 (DD)
Title: Anordnung zum erhoehen des infiltrationsvordruckes in anlagen der untergrundaufbereitung von wasser
Inventor: WINTER DIETMAR
IPC: E03B3/16
Filed: 1989-10-30
Abstract: Die Erfindung betrifft eine Anordnung zum Erhoehen des Infiltrationsvordruckes in Anlagen der Untergrundaufbereitung von Wasser mit zentraler Infiltration. Sie ist fuer Brunnenstandorte anwendbar, bei denen der ungestoerte Grundwasserspiegel mindestens 4 m unterhalb der geodaetischen Hoehe der erdverlegten Reinwasserdruckleitung liegt. Sie sieht vor, die Belueftungseinrichtung fuer das Infiltrationswasser, vorzugsweise einen Injektor, geodaetisch so tief anzuordnen, dasz ausreichender Treibwasservordruck an ihr vorhanden ist, jedoch nicht tiefer, als dies der Brunnenwasserstand unter Beruecksichtigung der UEberstauhoehe erlaubt. Erfindungsgemaesz kann die Belueftungseinrichtung entweder im Brunnen selbst oder im Inneren eines an sich bekannten Infiltrationsrohres angeordnet sein. Die obere OEffnung des Infiltrationsrohres kann in die Brunnenstube oder in einen gesonderten Schacht unmittelbar daneben muenden. Reinwasser als Infiltrationswasser und Reinluft werden mittels Rohren oder Schlaeuchen zur Belueftungseinrichtung geleitet. Fig. 3{Wasseraufbereitung; Untergrundwasseraufbereitung; Infiltration; Infiltrationsvordruck; Infiltrationsrohr; Injektor}
Patent DD-289693-A5 (DD)
Title: Mittel zur haftfaehigkeitsverbesserung von bioziden zur saatgutbehandlung
Inventor: HORN GERT
IPC: A01N25/24
Filed: 1989-12-01
Abstract: Die Erfindung beinhaltet Mittel zur Verbesserung der Haftfaehigkeit und zur Staubbindung fuer die Saatgutbehandlung mit insbesondere trockenformulierten Bioziden (z. B. Beizmitteln) auf der Basis von Alkylsulfonaten, insbesondere C12-C18-alkylierten, bzw. Alkylbenzensulfonaten, vorzugsweise C10-C13-alkyliert. Die Anwendung erfolgt in waeszriger Zubereitung in Konzentrationen von 5-20 * AS.{Saatgutbehandlung; Beizung; Haftfaehigkeitsverbesserung; Staubbindung; Arbeitshygiene; Tensid}
Patent DD-291756-A5 (DD)
Title: Verfahren zur herstellung von neuen arylverbindungen
Inventor: JACKSON WILLIAM P
IPC: C07C/
Filed: 1990-02-02
Abstract: Die Erfindung betrifft ein Verfahren zur Herstellung neuer Arylderivate der Formel * in der Ar 4-Halogenphenyl, Ar 1,3- oder 1,4-Phenylen, Y (E)CHCH sind und R1 und R2 unabhaengig unter Wasserstoff und C1-4-Alkyl ausgewaehlt werden, und ihrer Basen-Salze und physiologisch aktiven Derivate. Die neuen Verbindungen eignen sich fuer pharmazeutische Zubereitungen. Formel (I){Herstellung; Verfahren; Arylderivate; pharmazeutische Zubereitungen}
Patent DD-295134-A5 (DD)
Title: Verfahren zur steuerung des foerderprozesses pneumatischer schneckenfoerderer
Inventor: RAKOWSKI KARL-HEINZ
IPC: B65G33/00
Filed: 1990-06-18
Abstract: Die Erfindung betrifft ein Verfahren zur Steuerung des Foerderprozesses pneumatischer Schneckenfoerderer. Der Erfindung liegt die Aufgabe zugrunde, pneumatische Schneckenfoerderer so zu betreiben, dasz sie im verstopfungsgefaehrdeten Bereich foerdern und zugleich verstopfungsfrei arbeiten. Dies wird erfindungsgemaesz dadurch erreicht, dasz dem pneumatischen Schneckenfoerderer das Foerdergut derart schrittweise und dosiert zugefuehrt wird, dasz die Foerdergutmenge zuerst gesteigert und anschlieszend der sich einstellende Druck in der Foerderleitung auf gleichem Niveau gehalten wird, wobei die schrittweise Dosierung iterativ bis zu einem von Foerdergut und Anlagengestaltung abhaengigen, in der Foerderleitung gemessenen, oberen Drucksollwert oder einem zwischen dem Gasnetz und der Foerderleitung gemessenen Differenzdrucksollwert gesteigert und danach die Foerdergutzugabe reduziert wird. Figur{Schuettgut; Foerderung, pneumatisch; Schneckenfoerderung; Verstopfung; Foerdergutmenge; Erhoehung, schrittweise; Drucksollwert; Differenzdrucksollwert; Reduzierung}
Patent BE-1014728-A5 (BE)
Title: Immobilization of contaminants in sludge, by covering with finely divided material and injecting cement based grout
IPC: E02D3/12
Filed: 2002-03-26
Granted: 2004-03-02
Abstract: The sludge (11) is covered with a layer of finely divided material (12), at least some of the sludge is removed and a cement-based grout is injected into and mixed with the sludge.  A method for immobilizing, deactivating and/or neutralizing contaminants present in sludge comprises covering a layer of sludge with a layer of finely divided material, removing at least some of the sludge layer, and injecting a cement-based grout into the sludge layer and mixing it with the latter.  An Independent claim is also included for the process apparatus, comprising a rotor head rotatable about at least one axis and provided with one or more scoops (9) for removing the sludge, each scoop containing holes (21) for injecting the grout into the sludge at high pressure.
Patent BE-1018921-A5 (BE)
Title: Appareil de reglage de l'insertion du fil de trame pour metier a tisser a jet.
Inventor: MAKINO YOICHI
Filed: 2009-03-17
Granted: 2011-11-08
Abstract: Un appareil de réglage de l'insertion de fil de trame dans un métier à tisser à jet comprend un dispositif de modification de la trajectoire du fil de trame (21A, 21B) et un ordinateur de commande (C). Le réglage de protection est mis en oeuvre lorsque le réglage normal est inactif. Cette configuration permet de prologer la durée de vie d'au moins un palier (29) dans le moteur pas à pas (Ma, Mb).
Patent BE-1019148-A5 (BE)
Title: Werkwijze voor biogasproductie in de (bio)ethanol industrie.
Inventor: GOETHALS LODE MAURITS JOZEF GHISLAIN
Filed: 2010-01-12
Granted: 2012-04-03
Abstract: De werkwijze voor de bereiding van biogas gaat uit van een reactieproduct van ethanolproductie. Dit reactieprodukt wordt gescheiden in een eerste fractie en een tweede fractie (stap A). De eerste fractie wordt vervolgens ten minste gedeeltelijk gescheiden in een eiwitrijk deel en een koolstofrijk deel (stap B). Daarna wordt het koolstofrijke deel van de eerste fractie anaëroob omgezet, onder vorming van het biogas (stap C). De bereiding van biogas wordt bij voorkeur gecombineerd met ethanolproductie.
Patent BE-1019404-A5 (BE)
Title: Procede de production de produits a base de viande contenant de l'huile.
Inventor: DOMAZAKIS EMMANOUIL
Filed: 2011-03-31
Granted: 2012-06-05
Abstract: Procédé de production de produits à base de viande, caractérisé par l'incorporation à "froid" d'huile, de préférence de l'huile d'olive. Le procédé de production consiste en deux phases, à savoir la phase 1 et la phase 2. Durant la phase 1, une première émulsion contenant de l'huile est produite, à savoir émulsion (a), comprenant de l'huile, un émulsifiant ou un mélange de ceux ceci et des fibres alimentaires. La phase 2 comprend d'abord la préparation d'une émulsion à base de viande (pseudo-émulsion), à savoir émulsion (b), dans laquelle de l'huile a été ajoutée par incorporation directe "à froid" et après par addition d'une quantité de l'émulsion de la première phase (émulsion a). Le rapport de mélange des deux émulsions à base d'huile varie entre 0,1:1 à 1:1.
Patent DE-112006003527-A5 (DE)
Inventor: UHLEMANN STEPHAN
IPC: H01J37/153
Filed: 2006-10-11
Abstract: An electron optics corrector (2) for removing third order opening errors and anisotropic (azimuthal) components of the off-axis coma of the third order comprises using at least three coaxial hexapolar fields (3,7,8) having at least one spherical lens between each field. The fields are constructed pairwise on one another and their strengths chosen so that the image error coefficient of the third astigmatism is reduced to zero and at least three hexapolar fields in the Lamor reference system are turned relative to one another about the optical axis (28).
Patent BE-1002615-A6 (BE)
Title: Packaging for a paint sample
IPC: B65D75/54
Filed: 1988-11-24
Granted: 1991-04-09
Abstract: Packaging for a paint sample, with the distinguishing characteristic that itconsists primarily of a closed case (1) in which a quantity of paint (4) hasbeen placed on the one hand and a spongy material (3) on the other.
Patent BE-1008251-A6 (BE)
Title: Cleaning product
IPC: C11D3/20
Filed: 1994-04-28
Granted: 1996-02-27
Abstract: This cleaning product is easy to use, harmless and plant-based. It cleanspractically all materials. It removes stains, grease, revitalises colours andhas a deodorising action.
Patent ES-2000695-A6 (ES)
Title: Plastic bottle closure
Inventor: DUBACH WERNER FRITZ
IPC: B65D41/34
Filed: 1986-07-18
Abstract: A plastic closure with guarantee band for a bottle, pref. of polypropylene, has a bottom part which is fixed to the bottle neck and has a raised central spout with a hole. Webs join a guarantee band to it over half the periphery. An integral film hinge joins it to the cap which has a central pin to suit the hole in the other part. A lug snaps into a slot.
Patent ES-2001105-A6 (ES)
Title: Dihydropyridines.
Inventor: HOWARD WIKEL JAMES
IPC: C07D495/04
Filed: 1986-08-20
Abstract: The invention discloses the use as vasodilators of compounds of the formula < CHEM > wherein: R1 is hydrogen, C1-C4 alkyl, or < CHEM > each R2 is independently hydrogen, methyl, or amino each R3 is independently hydrogen, -COR7, -CO2R7, or -S(O)nR7 R4 is hydrogen, methyl, methoxy, halo, nitro, or amino R5 is hydrogen, methyl, methoxy, halo, C1-C4 alkylthio R6 is hydrogen, halo, C1-C4 alkoxy, C1-C4 alkyl, or nitro m is 0, 1, 2, 3, or 4 Z is O, S, or NH three or four of A1, A2, A3, and A4 are CH, and the remaining of A1, A2, A3, and A4, if any, is N R7 is -alk-(Y-alk-)t-R8, allyl, propargyl, C3-C6 cycloalkyl, phenyl, or phenyl substituted with one to three substituents selected from C1-C4 alkyl, C1-C4 alkoxy, nitro, or halo each "alk" is a divalent organic radical derived from a C1-C6 aliphatic hydrocarbon Y is -O-, -NH-, or a bond t is 0 or 1 R8 is hydrogen, phenyl, pyridyl, -CN, or -NR9R10 n is 0, 1, or 2 and R9 and R10 are independently C1-C3 alkyl or benzyl, or when taken together with the nitrogen atom to which they are attached form a pyrrolidino, piperidino, or homopiperidino ring, or a pharmaceutically acceptable salt thereof. Certain of the compounds are novel.
Patent ES-2020010-A6 (ES)
Title: Method for manufacturing a spectacle-glass for myopes.
Inventor: HELLSTROM LARS
IPC: G02C7/02
Filed: 1986-07-25
Abstract: In accordance with the desired diopter value, the required curvature, and with torus-like grinding, the so-called cross-curvature is computed, and according to the desired field of view, a second curvature is computed, whereafter the glass is arranged in a generator and a center hollowing (3) is milled according to the basic curvature, while thereafter the glass edge (2) around the center hollowing (3) is milled according to said second curvature, and the center hollowing (3) of the thus-machined glass is finished, respectively polished, by using a tool with convex radiusing which corresponds to the basic curvature, whereafter the edge (2) is subjected to at least one finishing operation and one polishing operation by using an implement with a convex radiusing which corresponds to said second curvature, whereby moreover use is made of a resilient intermediate part between said implement and a finishing pad, respectively polished pad.
Patent ES-2006082-A6 (ES)
Title: Herbicidal compsns.
Inventor: FODOR FERENC
IPC: A01N43/72
Filed: 1988-02-16
Abstract: Herbicidal compsns. contain 0.1-95 wt. % of a mixt. of N-(4-chloro-6-isopropyl aamino-1,3,5-triazin-2-yl) glycine ethyl ester (I) and 3-isopropyl-1H- bbenzo(2,1,3) thiadiazin-4-one 2,2-dioxide (II). The (I):(II) wt. ratio is 1:10 to 10:1. The balance of the compsns. comprises carriers and opt. surfactants.
Patent ES-2014603-A6 (ES)
Title: Box for the housing of electrical devices.
Inventor: BENITO NAVAZO JUAN MANUEL
IPC: H02G3/12
Filed: 1989-04-14
Abstract: An integral box attached to harpoon-shaped projections in the bottom of a channel-like duct member for electrical wiring by way of a fixed appendage and a pivotable locking tab. The latter has a lower portion extending below the base of the box and an upper portion. The lower portion is provided with a retaining appendage for a harpoon-shaped projection and the upper portion is provided with a locking mechanism.
Patent ES-2013894-A6 (ES)
Title: Cold hydraulic straightener for platforms, etc.
IPC: B21D1/14
Filed: 1989-04-21
Abstract: Bed for cold straightening of frames and stages with hydraulic components comprises horizontal parallel beams (11) forming a base to which vertical, parallel beams (3) are attached whose heights alternately reach to the full and half height of the bed. The upper ends of the vertical beams are coupled coupled to further longitudinal beams (3) in order to strengthen the whole structure. All these beams have a double-T profile whose webs have two rows of uniformly distributed boreholes to which are attached the auxiliary elements e.g. chains or belts, for attaching yhe levelling bench. A further set of horizontal beams (5) attached to the vertical set (2) serves a a rail for a crane (6) with a laterally movable wagon and hook (7) traversable along the complete bed. The total surface of the straightening bed can be covered by the longitudinal and transverse motion of the crane. Hydraulic pistons (13) attached to the bed or to independently movable T-shaped beam sections (4) apply the required forces to the framework which is to be straightened.
Patent ES-2013471-A6 (ES)
Title: Vacuum platen for sharp bends.
Inventor: NITSCHKE DAVID B
IPC: C03B23/035
Filed: 1989-04-28
Abstract: Apparatus (10) for bending glass sheets (12) disclosed provides press bending between a shaping surface (16), and a press ring (26) of a complementary shape. The apparatus (10) utilizes vacuum drawn through vacuum chambers (22, 30) and thereby on the shaping surface (16), to control the bending and avoid negative curvature associated with press bending sharp bends into glass sheets (12).
Patent ES-2014623-A6 (ES)
Title: Improved closure assembly
Inventor: PENA BAZTAN MANUEL
IPC: B65D41/26
Filed: 1989-05-19
Abstract: Improved leaktight assembly, for pouring-out and gradual metering, for receptacles which contain liquids for washing and treating clothing, and which principally comprises a metering cap and a pouring spout, the novelty consisting in the fact that the pouring spout consists in its upper part of a cap with zones of thickness weakening, and is specially intended for facilitating gripping, and of a perimeter ring arranged on the neck of the receptacle, acting as retainer for the pouring spout and which, as said perimeter ring has a smaller diameter than the outer band of the pouring spout, prevents extraction thereof by conventional means, thereby guaranteeing a perfectly sealed closure system.
Patent ES-2016698-A6 (ES)
Title: An exhaust pipe.
Inventor: MALMSTEN SVEN-OLOF
IPC: F01N1/24
Filed: 1989-06-14
Abstract: An exhaust silencer comprises an inner, flexible pipe (2), an outer casing (4) and a noise-suppressing material (3) between the pipe (2) and the outer casing (4). The casing comprises a strip (41) wound helically with partial overlap. A curable adhesive (43) is arranged between the turns in the overlap region (42) and is selected to be cured after the exhaust pipe has been bent to the desired shape and fitted.
Patent ES-2016169-A6 (ES)
Title: Improvements to electrovalves
IPC: F16K7/00
Filed: 1989-09-19
Abstract: The embodiment, constituted according to the proposed improvements, consists of an electrovalve which can be actuated both manually and electrically from a central unit, in which the passage of the fluid is direct owing to the fact that it has a cylindrical body capable of effecting linear movements, precisely axial movements, which body is equipped with a closure seal acting as obturator, to which end it has sealing gaskets and on the cylindrical housing of the main body which receives it, all this in order to reduce the loss of head and to increase the flow.
Patent ES-2017877-A6 (ES)
Title: Roll for guiding web type material
Inventor: KUHN FRIEDRICH
IPC: B65H19/28
Filed: 1989-12-05
Abstract: A roll for guidance of web type material, such as paper or cardboard, has a shell that features a multitude of bores. The roll is coordinated with a device for subjecting the roll interior to suction. To hold the web on the roll at standstill, part of these bores can be subjected to suction. In the operation of the roll, air trapped between the web and the roll shell can enter the roll also through the remaining bores and escape in the roll area that is not looped by the web.
Patent ES-2029760-A6 (ES)
Title: Bottle top cover - has hollow plastics cap which fits over neck of opened bottle to allow someone to drink from it safely
Filed: 1990-02-20
Abstract: Consists of a process to obtain a product to balance skin's cutaneous sweating, using sodium bicarbonate as a base product, mixed with a minimum proportion of pigment and fragrance. The mixture, once suitably blended, will be made in a powder mixer and then put into packets for subsequent sale.
Patent ES-2021518-A6 (ES)
Title: Improvements to the subject of main patent No. 9001090, for "Modular bulb-holder applicable to electric lighting installations".
IPC: H01R33/09
Filed: 1990-04-18
Abstract: Improvements to the subject of main patent No. 9001090, for "Modular bulb-holder applicable to electric lighting installations". This relates to the fittings on public streets and highways, in which the basic component unit of the assembly consists of a bulb 1 whose metal holder has been covered or replaced by one of insulating material such that the resulting assembly forms a single, completely sealed and electrically insulated whole. They are characterized by the fact that the metal holder is replaced by a holder 4 of insulating material that comprises a casing 5 of insulating material, tongues 6 of conducting material and clamping parts 7 that press the electrical conductors 3 against the aforesaid tongues 6. This succeeds in removing all the metal parts from the bulb, preventing their deterioration.
Patent ES-2024901-A6 (ES)
Title: Improvements to the subject of patent No. 8802702, submitted on 2.9.88, for an improved device applicable to the fitting of motor-vehicle identification insignia
IPC: B60R13/10
Filed: 1990-07-05
Abstract: Improvements to the subject of patent No. 8802702, submitted on 2.9.88, for an improved device applicable to the fitting of motor-vehicle identification insignia, in which the insignia is integral with a plinth which can slide vertically between an upper position, in which the insignia is located outside the bodywork, and another, inner position, in which it is located inside said bodywork. The aforesaid plinth is fixed to the end of the rod of a vertical, double-acting hydraulic or pneumatic cylinder housed inside the vehicle bodywork.
Patent ES-2028535-A6 (ES)
Title: Ceramic parts manufacturing unit
Inventor: RIOS FELIPE
IPC: B28C9/00
Filed: 1990-01-04
Abstract: Ceramic parts manufacturing unit. It comprises a manufacturing unit which effects the various operations and operational stages in relation to the subject, having devices which function in an automatic manner, opening the moulds and related operations, by means of a device worked by an operator which has a variable rhythm and all these points being situated around a work station, whilst the drying device is located at a different level to the remainder of the devices, but in parallel with units for the identical purpose, being incorporated into a storage unit and having a zone supplying the firing equally in common.
Patent BE-1015520-A6 (BE)
Title: Fold away clothes hanger secured to seat inside motor vehicle, has hanger part connected to headrest rods via articulated arms
IPC: B60R7/10
Filed: 2003-05-16
Granted: 2005-05-03
Abstract: The hanger part (14) is secured to at least one of the rods (8, 9) for mounting the seat headrest (10) via a connecting arm (11, 12) with one end connected to the hanger part and the other end pivotally connected to the rod, so that the hanger can be moved between a retracted position and an extended position.